Mark Hugo Lopez is associate director of the Pew Hispanic Center.

马克·雨果·洛佩兹是西班牙人救济中心的副董事。

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One organization that carries out research on such issues is the Pew Hispanic Center.

一个叫“普优西语裔研究中心”的组织专门就这个问题进行研究。

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The Pew Hispanic Center estimates that about 8% of all children born in the US in 2008 have parents who are in the country illegally.

皮又拉美裔中心估计2008年所有在美国出生的孩子中大约有8%的父母在美国的停留是非法的。

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The Pew Hispanic Center says more than half of Mexican immigrants are undocumented.

VOA: special.2009.04.18

There are about 120, 000 illegal immigrants in Connecticut, according to the Pew Hispanic Center.

WSJ: Connecticut Weighing Driver's Licenses for Illegal Immigrants

"The face of the country is changing, " said Jeffrey Passel, demographer at the Pew Hispanic Center.

CNN: STORY HIGHLIGHTS

According to the Pew Hispanic Center, 1 in 5 schoolchildren are Hispanic.

FORBES: Who Really Owns the 2012 Hispanic Vote?